Well-drilling rig.



C. C. AVERILL.

WELL DRILLING RIG.

APPLICATION FILED APR. I]. 1916. 1,208,891. Patented Dec. 19,1916.

3 SHEETS-SHEET I A ORNEV C. C. AVERILL.

WEtL DRILLING RIG.

APPLICATION man A". :1. 1916.

1,208,891. Patented Dec. 19, 1916.

3 $HEETSSHEET 2.

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C. C AVERILL.

WELL DRILLING RIG.

APPLICATION man APR. 1?. 1916,

3 $HiETSSHEET 3.

Patented Dec. 19, 1916.

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' Specification of Letters Patent.

Patented Dec. 1*,1916.

Application filed April 11, 1910. Serial No. 01,542.

To all whom it may concern:

Be it known that I, CHARLES, C. Avnmnn, a citizen of the United States,residing at Trees, in the parish of Caddo and State of Louis1ana,;haveinvented acertain new and useful Improvement in Well-Drilling Rigs, ofwhich improvement the following is a specification. v v

This invention relates to rigs for drilling wells, and more particularlyto what are known as Standard rigs and combination rigs used fordrilling oil wells, and in which a derrick is employed. With these formsof rigs as heretofore used hoisting drums, such .as the so-called bullwheel and the calf wheel, have been mounted at one or more sides of thederrick and upon its foundation, but an additional foundation has beenemployed extending out from one side of the foundation of the derrickfor supporting a driving wheel. for operating the walkin beam, sandreels, and other drums or w eels for various purposes. This additionalfoundation requires considerable space and a lar amount of extra timberlabor is also r uired in its construction,

One of the o jects ofmy invention is to provide a rig in whichsubstantially all the wheels, hoists, and other 0 crating parts aremounted on the derric foundation, thereby greatly reducing the cost ofeonstruction and the amount of space and material'required. 1

Another feature of my improvement relates to the means for driving thewalkin beam, and a rotary by a crank shaft loca near or beneath thederrick floor and having suitable sprocket wheels.

Another feature comprises a line shaft mounted on u right derrickmembersacross one side of tli plurality of drums located above saidshaft at the same side of the derrick and adapted to be driven thereby.

Another feature comprises a pivot for the f lower end of the samsonpost, whereby a short walking beam may be employed, and the end thereofwill move in substantlally a drilling with cable and tools system or forpumping'after the drilling is compl fully described in, detail noveltywill be'set' forth in I claims.

and the points 'of the appended which is expensive, while muchadditional or more, three being shown in ig. 3 of the .and tools of astandard ri These drums shaft,10.' The drums are also each pro e derrickfoundation and a N of the derrick, a more l'ifldfinfing is prostraightline. This feature may be used-for I thebase ofjtheidemc eted. .5 Theseand other features will nowbe more :The crank whee 18ci 1s provided withIn the accompanying drawings: Figure 1 is a plan of the base of aderrlck with one form of my improved drilling rig; Fig. 2, a sideelevation of a portion of the derrick showing the driving connection forthe walking beam; Fig. 3, an elevation of one of the adjacent sides ofthe derrick showing the power or line shaft and the several hoistingdrums that may be driven thereby; Fig. 4, a vertical section through thederrick and showing the walking beam and crank shaft in side elevation;and Fig. 5, a similar sectional view showing a rotary rig and thedriving connection fromthe crank shaft.

My lmprovement is shown as applied in connection with the usual formfour le ged derrick with a square foundation or iase constructed of mainsills, 6, cross sills, 7,

floor beams or stringers 8, and flooring, 9.

A power or line shaft, 10 is mounted in hearings on the upright memberson the derrick base and across one side thereof near the floor, saidshaft being preferably driven by an .engine or other motor, '11,connected directl at one end ofthe shaft by means of a flexi le'coupling. Above the shaft and parallel therewith, upon the samev side ofthe derrick aremounted the hoistin drums one as drawing, the drum, 12,which may be used for bailing with the standard rig, the drum, 13, forhoisting tubing etc, of a rotary ri and the drum, 14, used with theusual cab e are-mounted onse arate s aftsada ted to be driven I inde enentl of each "at or b means of-suita le' clutc es, sprocket whee s and.drive chain connections from"the-;linevided with the usual brake bandsand wheels. thus locatingthej line shaft be low theholsting drumsandlnearer the floor.

vided for said shaftan vibration is thereby avoided. p The walkiifibeam, 15, is pivotally m use ed on the post, 16, and isoperated by"apitman, 1'1, pivoted {on .flieh-crank s rocket wheehAS; mounted on thecrank shefiylwwhichis supfiortedin bearings' on near or below the H001,and is driven by'a chain from the line shaft, operatin on sprockets, 20and 18.

cha e ea chain driven from a s ing, 21, whereby the same may swingforward and backward a slight distance to com- .pensate for the inwardand outward movement of the end of the beam in oscillating on its pivot.The braces, 22, are pivotally attached at one end to the top of thewalking beam, and at the other en to the floor at some distance, forsteadying and guiding the samson 0st. This feature of providing for astraig t line movement is especially imortant after the well isfinished, for operatmg the rod, 27, of the pump. A universal linkconnection, 23, is provided between the upper end of the pitman and thewalking beam, whereby the pitman may swin both transversely andlongitudinall of sai beam and thereby prevent any bin ing action on theconnecting pin.

My improvement is also adapted to operate a rotary, 26, by means of asprocket, 25, and rocket wheel, 24, on the-crank shaft, 19, as s own inFig. 5. The size. of the sprocket wheels for the several drives may bereadily changed at any time 've the desired speed ratio.

t will now be seen that my improved construction may be used either as astandard rig with cable and tools, or as a combination rig including therotar hydraulic system,

and that substantially a 1 parts of the a paratus are contained withinthe space 0 the gerrick foundation and supported upon its ase.

Having now described my invention, what 1 claim as new and desire tosecure by Letters 'Patent is:

1. In a well drilling rig, the combination with a derrick having asubstantially rectangular base, of a power shaft mounted in bearingsalong one side of said base, a crank shaft at the middle portion of oneof the other sides of said base, a driving connection between saidshafts a walking beammounted on said base, and operated bysaid crankshaft, and one or more hoisting drums mounted above said. power shaftand operated thereby.

2. In a well drilling rig, the combination with a derrick havinga'substantially rectangular base, of a power shaft mounted in bearingsalong one side of said base, a crank shaft mounte at the middle portionof one of the other sides of said base, and extending beneath the floorof the derrick, a driving connection between said shafts, a rotarydrilling device, and a driving connection from said crank shaft to therotary.

3. In a well drilling rig, the combination with a derrick having asubstantially rectangular base with upright members at the cornersthereof, of a samson post mounted on the derrick floor within the urights, a walking beam pivotally mounte on said 0st, a crank shaft see,a itman connecting said crank shaft and wal ing beam, and drivingmechanism for o eratin said crank shaft.

the combination 4. n a wel drilling rig, with a derrick having a baseand upright members at the corners thereof, of a power shaft mounted inbearings along one side and supported on said base, a motor connected atone end of said shaft, one or more hoistin drums driven from said shaft,a crank s aft also mounted on said base within the uprights and parallelwith said power shaft, and a driving connection between said shafts.

5. In a well drilling rig the combination with a derrick having a baseand upright members at the corners thereof, of a power shaft mounted inbearings along one side and supported on said base, one or more hoistindrums driven from the power shaft, a cran shaft also mounted at themiddle ortion of one of the other sides of said base parallel with thepower shaft, and havin a crank, a walkin beam also substanti y arallelwith sai shafts, and a pitman connected to the crank and the walkingbeam.

'6. In a well drilling rig, the combination of a samson post hinged atits base,a walking beam mounted on said post, and braces pivotallconnected to the walking beam at a point a ove the samson post an to asuport. p 7. In a well drilling rig the combination with a derrickhaving a door, of a samson post hinged at its base to said floor, awalkmg beam mounted on the samson post, and braces pivotally connectedwalking beam at post and at the other to In testimony whereof saidfloor.

m hand. CHARLES C. AVERILL.

mounted on the derrick I have hereunto set at one end to the a pointabove the samson

